[1] Pecos Spring was emitted from the Edwards and associated limestones of the Edwards-Trinity (Plateau) aquifer.
[2]: 59 Cabeza de Vaca probably passed the spring in 1534.
Later it became a regular stop on the Old Spanish Trail from San Antonio to El Paso.
It was the last good water for travelers from the east on the road up the dry, barren, west bank of the brackish Pecos River before the road reached the Arroyo Escondido, 48.52 miles away.
This article about a location in Pecos County, Texas is a stub.